Demonstration circuit DC929A-B is a monolithic high voltage (6V-36V) switching buck regulator, USB Power path controller, and Li-Ion battery charger. It is based on the LTC4089-5 and provides the following functions: 1.2A monolithic buck regulator with output voltage tracking battery voltage VBAT, a 700mA CC/CV timer terminated temperature qualified charger suitable for Li-Ion cells, a USB power manager that insures compliance with the USB power specification and Power path management for the battery